[Defeated Heron to respawn Darkrai and succeeded but cannot enter dark realm again.]

2 hours ago, HappyMango said:

 

Hi, @Elequence

 

I'm sorry for the inconvenience.

Yes, you would have to defeat the boss Horon one more time to reset the dark realm quest.

 

Have a nice day.

Kind regards, HappyMango.

@HappyMango Thank you for the concrete answer, that's all I needed. 

[Defeated Heron to respawn Darkrai and succeeded but cannot enter dark realm again.]

I did beat Horon without letting a pokemon faint though. Are you saying I have to do it again in 3 days to get Alucard to respawn?

[the castle's ongoing problem :C]

I'm having this same problem. I don't know where to go from here so I guess I'm just stuck hunting until someone figures this out.

[Defeated Heron to respawn Darkrai and succeeded but cannot enter dark realm again.]

So I messed up my initial catch of Darkrai so I beat Heron to respawn him. All good, caught Darkrai, everything is great. The issue is that in the Gengarite quest I don't have an Alolan Rattata/Cubone and only have 3 pokes which makes it nearly impossible to complete. I thought I was supposed to be able to enter the dark realm again after beating Heron but Alucard doesn't spawn again and I don't know another way in. 

 

Any assistance is appreciated.